Jump to content

IFMGA guides in the Lyngen area: Join the daily online guide-meetings: guidemeeting.no

We recomend that all skiers download the free Varsom app on App Store or Google Play.

Read more about how to read and share observations on Varsom app and Regobs system | Varsom.no.

Ski touring in Norway - important information | Varsom.no

Debris avalanches, debris flows and slush slides warning yellow level for parts of Sørlandet, Østlandet og Trøndelag

2

Yellow level

Published: Valid: from 22.05.2023 07:00 to 23.05.2023 06:59
Next forecast before:
  • Danger ongoing: Monday evening 22. May. 2023
  • Danger decrease: Tuesday afternoon 23. May. 2023
  • Height: 0 - 1400 moh

Oppdatert informasjon -

Varselet er utvida med enkelte kommuner i Agder og Telemark, samt Innlandet øst for Hamar.

Consequence

Landslides may be expected. Exposed railways and roads may be closed. Along the watercourses in the flood areas high discharge can lead to erosion of masses at the foot of slopes. Rapid decline of water levels after flood can also cause local landslides. Debris flows may reach the valley bottom even if they are triggered high in the terrain.

Advice

Keep yourself updated about the development of the weather, the landslide and flood situation, and follow the weather radar. Keep away from steep slopes, as well as streams and rivers with high discharge. Keep water paths and culverts free of snow, ice, gravel, waste, twigs and leaves. Clogged waterways with dammed water may cause landslides.

Description

It is expected a significant amount of rain in the eastern part of Norway from Monday evening until Tuesday afternoon. Along the watercourses in the flood areas high discharge can lead to erosion of masses at the foot of slopes. Rapid decline of water levels after flood can also cause local landslides. Risk of slushflows is especially high in areas with less than 1 meter deep snow. The snow may in some places be fully water-saturated. Slushflows are triggered even in relatively gentle slopes, where water accumulates. Slushflows follow terrain depressions and may develop into debris flows. Steep slopes, as well as streams and rivers with high discharge, are particularly exposed. Heavy snowmelt is expected. The soil water content will increase due to snowmelt. This will increase the danger of (slushflows and) landslides and debris flows along rivers and streams, and in slopes where there is snowmelt.